I'm not going to do it so we'll see what happen. Something that makes me worry more is the placement. I have them right by the window and the cold will leak and they may not like it. I might try to put one or two of the trees in a colder room so they can go dormant. These Chinese Elm can survive in both conditions.
You can't really tell either way. But at least when doing it yourself you can verify the process. With software RNG There's no way to know. You just trust the software did a great job.